CN111714967A - Gravity type precipitation device and method - Google Patents
Gravity type precipitation device and method Download PDFInfo
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- CN111714967A CN111714967A CN202010545302.2A CN202010545302A CN111714967A CN 111714967 A CN111714967 A CN 111714967A CN 202010545302 A CN202010545302 A CN 202010545302A CN 111714967 A CN111714967 A CN 111714967A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
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Abstract
The invention provides a gravity type sedimentation device and a method thereof, the gravity type sedimentation device comprises a first closed container and a first inverted container, because the first inverted container is of an inverted U-shaped structure and is coaxially arranged in the first closed container, the top of the first inverted container is provided with a first air outlet, the bottom of the first inverted container is provided with an opening, by coaxially arranging a first inverted container in an inverted U-shaped structure in the first closed container, under the condition of realizing the same expansion volume, the structure is more compact, the occupied area is smaller, the gas deceleration efficiency is higher, and in addition, the through-flow section of the first inverted container is larger than or equal to that of a channel between the first closed container and the first inverted container, so that the defect of secondary acceleration caused by the fact that the through-flow section of the gas flow channel is reduced from the large value is overcome.
Description
Technical Field
The invention belongs to the field of air purification, and particularly relates to a gravity type precipitation device and a gravity type precipitation method.
Background
With the establishment of beautiful home gardens as a national strategy, dust emission control in environmental problems relates to the health of each citizen and becomes a focus of attention in daily life of common people. The building industry is brought into one of air pollution prevention and control main battlefields, and the dust emission problem is a control core element. The pressure gas emission pollution with dust of cement silos, mortar silos and the like in construction sites is a serious disaster area. At present, the most dust control measures are adopted, the polluted air is isolated or a method of covering a pollution source is suggested, and the dust pollution prevention and control means is very effective. The existing commercial dedusting equipment is too expensive to adapt to the field characteristics of the building industry to effectively operate due to the lack of air purification equipment carrying dust, especially when the dust is serious.
Therefore, how to provide a simple and effective gravity type precipitation device and method for purifying dust-containing pressurized gas becomes a technical problem that further improvement and optimization are needed in the building construction industry.
Disclosure of Invention
The invention aims to provide a gravity type precipitation device and a gravity type precipitation method, which can achieve the aim of purifying precipitated dust by carrying out capacity expansion and speed reduction on gas with dust pressure.
In order to solve the technical problems, the invention provides the following technical scheme:
a gravity precipitation device comprising: a first closed container and a first inverted container, wherein the top of the first closed container is provided with a first air inlet, the bottom of the first closed container is provided with a residual sediment recovery port, the first inverted container is of an inverted U-shaped structure, the first inverted container is coaxially arranged in the first closed container, a first air outlet is formed in the top of the first inverted container, the bottom opening of the first inversion container is arranged, a channel between the first closed container and the first inversion container is used as a primary flash chamber, the inner space of the first inverted container is an inverted two-stage flash chamber, the gas with dust under pressure enters the first closed container through the first gas inlet and passes through a channel between the first closed container and the first inverted container, flows into the first inverted container from the bottom opening of the first inverted container and finally flows out through the first air outlet.
Preferably, in the gravity sedimentation device, a flow cross section of the first inverted container is equal to or greater than a flow cross section of a passage between the first closed container and the first inverted container.
Preferably, in the gravity sedimentation device, the distance between the outer wall of the first inverted container and the inner wall of the first closed container is equal, the cross sections of the first inverted container and the first closed container are circular, the upper portion of the first inverted container is convex circular arc-shaped, and the cross section of the upper portion of the first inverted container is gradually enlarged from top to bottom.
Preferably, in the gravity sedimentation device, a distance between the vertical central axis of the first inverted container and the side wall of the first inverted container is 0.71 to 0.8 of a distance between the vertical central axis of the first inverted container and the side wall of the first closed container.
Preferably, in the gravity type sedimentation device, the bottom of the first closed container is a funnel structure, a small-opening end of the funnel structure serves as a sedimentation excess material recovery opening, and a gravity type spring automatic opening and closing cover is arranged at the sedimentation excess material recovery opening.
Preferably, in the gravity type sedimentation device, the gravity type spring automatic opening and closing cover includes an anchor ear, a cover plate, a cover hook, a first spring hinge and a second spring hinge, the anchor ear is fixedly disposed on the outer side of the lower portion of the funnel structure, a first ear plate and a second ear plate are respectively disposed on opposite sides of the anchor ear, the upper end of the cover hook is hinged to the first ear plate through the first spring hinge, one end of the cover plate is hinged to the second ear plate through the second spring hinge, the other end of the cover plate is connected to the cover hook through a snap, when the weight of the sediment dust on the cover plate is greater than or equal to a design value, the cover plate is automatically opened, and when the weight of the sediment dust on the cover plate is smaller than the design value, the cover plate is automatically closed.
Preferably, in the gravity type sedimentation device, an outer convex elastic projection is arranged at the upper part of the other end of the cover plate, an inner concave elastic groove is arranged at the inner side of the lower part of the cover hook, and the outer convex elastic projection is matched with the inner concave elastic groove.
Preferably, in the gravity sedimentation device, a distance between the bottom of the first inverted container and a maximum allowable stockpiling height line of the sedimentation residue in the first closed container is greater than or equal to a distance between a side wall of the first inverted container and a side wall of the first closed container.
The invention also discloses a pressurized gas purification method, which adopts the gravity type precipitation device to expand and reduce the speed of the pressurized gas with dust so as to precipitate solid particles in the gas.
Preferably, in the method for purifying a pressurized gas, the pressure of the pressurized gas with dust is 0.05 to 0.3 MPa.
Preferably, in the above pressurized gas purification method, the gas treated by the gravity type precipitation device is subjected to spray humidification treatment by a spray purification device, the spray purification device includes a second closed container, a second inverted container and a plurality of pipelines with spray heads, a second gas inlet is formed in the top of the second closed container, the second gas inlet is connected with a first gas outlet of the spray purification device through a first pipeline, the lower part of the second closed container is used as a water collecting tank, a first wastewater discharge valve is formed in the bottom of the water collecting tank, the second inverted container is of an inverted U-shaped structure, the second inverted container is coaxially arranged in the second closed container, a second gas outlet is formed in the top of the second inverted container, a bottom opening of the second inverted container is provided, and the gas treated by the gravity type precipitation device enters the second closed container through the second gas inlet, and after passing through a channel between the second closed container and the second inverted container, the water flows into the second inverted container from the bottom opening of the second inverted container and finally flows out from the second air outlet, a plurality of pipelines with spray heads are respectively arranged on the inner wall of the second closed container and the inner wall and the outer wall of the second inverted container, and the water in the water collecting tank is pumped to each spray head through a pressure pump.
Preferably, in the above pressurized gas purification method, the gas treated by the spray purification device is subjected to liquid-gas combined purification treatment by a liquid dust removal mixing device, so that solid particles in the gas are further dissolved in the liquid, the spray purification device is hermetically connected with the liquid dust removal mixing device by a second pipeline, the liquid dust removal mixing device comprises a third closed container provided with liquid and a liquid-gas combiner, a second wastewater discharge valve is arranged at the bottom of the third closed container, an exhaust valve is arranged at the top of the third closed container, the liquid-gas combiner is arranged in the third closed container, the liquid-gas combiner comprises an air inlet pipe, and a liquid inlet pipe, an air suction pipe, a liquid-gas mixing pipe and a diffusion pipe which are coaxially connected in sequence, the free end of the liquid inlet pipe is a liquid inlet, a liquid booster pump is arranged on the liquid inlet pipe, and the free end of the diffusion pipe is a liquid-gas discharge outlet, one end of the air inlet pipe is connected to the side wall of the air suction pipe, and the other end of the air inlet pipe is connected with the second pipeline.
According to the technical scheme disclosed above, compared with the prior art, the invention has the following beneficial effects:
the invention provides a gravity type sedimentation device and a method, the gravity type sedimentation device comprises a first closed container and a first inverted container, the top of the first closed container is provided with a first air inlet, the bottom of the first closed container is provided with a sedimentation excess material recovery port, the first inverted container is of an inverted U-shaped structure, the first inverted container is coaxially arranged in the first closed container, the top of the first inverted container is provided with a first air outlet, the bottom of the first inverted container is provided with an opening, a channel between the first closed container and the first inverted container is used as a primary expansion chamber, the inner space of the first inverted container is an inverted secondary expansion chamber, gas with dust pressure enters the first closed container through the first air inlet, and flows into the first inverted container from the bottom opening of the first inverted container after passing through the channel between the first closed container and the first inverted container, and finally, the gas flows out from the first gas outlet, and the first inverted container is of an inverted U-shaped structure and is coaxially arranged in the first closed container, the top of the first closed container is provided with a first gas inlet, and the top of the first inverted container is provided with a first gas outlet, so that the first inverted container in the inverted U-shaped structure is coaxially arranged in the first closed container, the structure is more compact, the required occupied area is smaller, and the gas speed reduction efficiency is higher under the condition of realizing the same expansion volume.
Moreover, as the through-flow section of the first inverted container is larger than or equal to that of the channel between the first closed container and the first inverted container, the defect of secondary acceleration caused by the fact that the through-flow section of the airflow channel is reduced from large to small is avoided.
In addition, the cross sections of the first inverted container and the first closed container are circular, the distance from the outer wall of the first inverted container to the inner wall of the first closed container is equal, the upper part of the first inverted container is in a convex arc shape, and the cross section of the upper part of the first inverted container is gradually enlarged from top to bottom. Streamlining is the external shape of an object, usually represented by a smooth and regular surface, without large undulations and sharp corners. The fluid appears predominantly laminar on the surface of the streamlined object with little or no turbulence, which ensures that the object is subjected to less resistance.
Drawings
Fig. 1 is a schematic structural diagram of a gravity type sedimentation device according to a first embodiment of the present invention.
Fig. 2 is a schematic structural view of a gravity spring automatic opening/closing cover according to a first embodiment of the present invention.
Fig. 3 is a schematic connection diagram of a gravity type precipitation device and a spray purification device in a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a spray purification apparatus according to a second embodiment of the present invention.
Fig. 5 is a schematic connection diagram of a gravity type precipitation device, a spray purification device and a liquid dust removal mixing device according to a third embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a spray purification apparatus according to a third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a liquid dust removal mixing device in the third embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a liquid-gas combiner in the third embodiment of the present invention.
Fig. 9 is a schematic structural view of a baffle in a third embodiment of the present invention.
In the figure: 1-gravity type precipitation device, 11-first closed container, 112-first air inlet, 113-precipitation residual material recovery port, 12-first inverted container, 121-first air outlet, 2-spray purification device, 21-second closed container, 211-second air inlet, 22-second inverted container, 221-second air outlet, 23-spray head, 24-first waste water discharge valve, 25-exhaust valve, 26-pressure pump, 27-bell mouth type filter screen, 28-high pressure flushing nozzle, 3-liquid dedusting mixing device, 31-third closed container, 32-liquid-gas combiner, 321-liquid inlet pipe, 322-air suction pipe, 323-liquid-gas mixing pipe, 324-diffusion pipe, 325-air inlet pipe, 33-second waste water discharge valve, 34-exhaust valve, 35-filter screen, 36-guide plate, 361-arc groove, 37-liquid booster pump, 38-liquid injection pipe, 4-first pipeline, 5-second pipeline, 6-gravity type spring automatic open-close cover, 61-anchor ear, 62-cover plate, 621-convex elastic bulge, 63-cover hook, 631-concave elastic groove, 64-first spring hinge and 65-second spring hinge.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. The technical contents and features of the present invention will be described in detail below with reference to the embodiments illustrated in the accompanying drawings. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
Example one
Referring to fig. 1 to 2, the embodiment discloses a gravity type settling device 1, which includes a first closed container 11 and a first inverted container 12, a first air inlet 112 is formed in the top of the first closed container 11, a settling excess material recovery port 113 is formed in the bottom of the first closed container 11, the first inverted container 12 is of an inverted U-shaped structure, the first inverted container 12 is coaxially disposed in the first closed container 11, a first air outlet 121 is formed in the top of the first inverted container 12, a bottom opening of the first inverted container 12 is formed, a through-flow cross-section of the first inverted container 12 is greater than or equal to a through-flow cross-section of a passage between the first closed container 11 and the first inverted container 12, a gas to be treated with dust pressure enters the first closed container 11 through the first air inlet 112, and passes through the passage between the first closed container 11 and the first inverted container 12, flows into the first inverted container 12 from the bottom opening of the first inverted container 12 and finally flows out through the first air outlet 121. On one hand, according to the gravity type sedimentation device, the first inverted container 12 in the inverted U-shaped structure is coaxially arranged in the first closed container 11, the channel between the first closed container 11 and the first inverted container 12 serves as a primary expansion chamber, the inner space of the first inverted container 12 serves as an inverted secondary expansion chamber, under the condition that the same expansion volume is achieved, the overall structure of the gravity type sedimentation device 1 can be more compact, the required occupied area is smaller, and the speed reduction efficiency is higher, and on the other hand, as the through-flow section of the first inverted container 12 is larger than or equal to that of the channel between the first closed container 11 and the first inverted container 12, the defect of secondary acceleration caused by the fact that the through-flow section of an airflow channel is reduced from large to small is overcome.
The gravity type precipitation device 1 adopting the structure can reduce 50% of total solid particles mainly aiming at the solid particles with the particle size of 10-100 microns, gas to be treated enters the first closed container 11 through the first gas inlet 112 and moves downwards along a channel between the first closed container 11 and the first inverted container 12, and then flows into the first inverted container 12 from the bottom opening of the first inverted container 12, so that the capacity expansion and the speed reduction of the gas with dust and pressure are realized, namely, the gas flow rate is reduced by expanding the volume, the flow velocity kinetic energy of dust particles is further reduced, the solid particles with the particle size of 10-100 microns cannot continuously enter the spray purification device 2 after the kinetic energy reduction, and the solid particles are precipitated under the action of gravity and recovered.
Preferably, in the gravity settling device, the distance between the outer wall of the first inverted container 12 and the inner wall of the first closed container 11 is equal, the cross sections of the first inverted container 12 and the first closed container are circular, the upper portion of the first inverted container 12 is convex circular arc, and the cross section of the upper portion of the first inverted container 12 is gradually enlarged from top to bottom. Streamlining is the external shape of an object, usually represented by a smooth and regular surface, without large undulations and sharp corners. The fluid appears predominantly laminar on the surface of the streamlined object with little or no turbulence, which ensures that the object is subjected to less resistance.
Preferably, in the gravity type settling device, a distance between a vertical central axis of the first inverted container 12 and a side wall of the first inverted container 12 is 0.71-0.8 of a distance between the vertical central axis of the first inverted container 12 and a side wall of the first closed container 11, and a distance between a bottom of the first inverted container 12 and a maximum allowable stockpiling height line of the settled residues in the first closed container 11 is greater than or equal to the distance between the side wall of the first inverted container 12 and the side wall of the first closed container 11.
Preferably, in the gravity type settling device, the bottom of the first closed container 11 is a funnel structure, a small end of the funnel structure serves as the settling excess material recovery port 113, a gravity type spring automatic opening and closing cover 6 is disposed at the settling excess material recovery port 113, the gravity type spring automatic opening and closing cover 6 includes an anchor ear 61, a cover plate 62, a cover hook 63, a first spring hinge 64 and a second spring hinge 65, the anchor ear 61 is fixedly disposed at the outer side of the lower portion of the funnel structure, a first ear plate and a second ear plate are respectively disposed at opposite sides of the anchor ear 61, the upper end of the cover hook 63 is hinged to the first ear plate through the first spring hinge 64, one end of the cover plate 62 is hinged to the second ear plate through the second spring hinge 65, the other end of the cover plate 62 is connected to the cover hook 63 in a snap-fit manner, a convex elastic protrusion is disposed at the upper portion of the other end of the cover plate 62, the inner side of the lower part of the cover hook 63 is provided with an inward concave elastic groove 631, the outward convex elastic projection 621 is matched with the inward concave elastic groove 631, when the weight of the deposited dust on the cover plate 62 is larger than or equal to a design value, the cover plate 62 is automatically opened, and when the weight of the deposited dust on the cover plate 62 is smaller than the design value, the cover plate 62 is automatically closed. That is, the precipitated solid particles, i.e., dust, can be recycled through the gravity type spring automatic opening and closing cover arranged at the bottom of the first closed container 11, the gravity type spring automatic opening and closing cover automatically opens and closes, and the spring principle is utilized, and when the weight of the dust reaches a certain weight, the dust excess material is automatically released and recycled; after the dust is released, the gravity type spring automatic opening and closing cover is automatically closed.
With reference to fig. 3 to 4, the present embodiment further discloses a method for purifying the dust-laden pressurized gas, which employs the gravity type precipitation apparatus to perform expansion and deceleration on the dust-laden pressurized gas, so as to precipitate solid particles in the gas.
Example two
Referring to fig. 3 to 4 and fig. 1 to 2, the pressurized gas purging method of the present embodiment has the following differences compared to the first embodiment:
in the pressurized gas purification method of the embodiment, the gas treated by the gravity type precipitation device is subjected to spray humidification treatment by a spray purification device, the spray purification device 2 includes a second closed container 21, a second inverted container 22 and a plurality of pipelines with spray heads 23, a second gas inlet 211 is formed in the top of the second closed container 21, the second gas inlet 211 is connected with a first gas outlet 121 of the spray purification device 1 through a first pipeline 4, the lower part of the second closed container 21 serves as a water collecting tank, a first wastewater discharge valve 24 is formed in the bottom of the water collecting tank, the second inverted container is of an inverted U-shaped structure, the second inverted container 22 is coaxially arranged in the second closed container 21, a second gas outlet 221 is formed in the top of the second inverted container 22, a bottom opening of the second inverted container 22 is formed, and the through-flow cross-section of the second inverted container 22 is greater than or equal to the through-flow cross-section of a channel between the first closed container 21 and the first inverted container 22 The flow cross section is that the gas to be treated after being treated by the gravity type precipitation device 1 enters the second closed container 21 through the second gas inlet 211, flows into the second inverted container 22 from the bottom opening of the second inverted container 22 after passing through a channel between the second closed container 21 and the second inverted container 22, and finally flows out through the second gas outlet 221, a plurality of pipelines with the spray heads 23 are respectively arranged on the inner wall of the second closed container 21 and the inner wall and the outer wall of the second inverted container 22, and water in the water collecting tank is pumped to each spray head 23 through a pressure pump. The spray purification device 2 with the structure can reduce 30% of total solid particles mainly aiming at the solid particles with the particle size of 2.5-10 mu m, and humidify the dust-laden pressure gas through the spray head 23, so that the solid particles with the particle size of 2.5-10 mu m in the dust-laden pressure gas are added with water to increase weight and precipitate or the dust is dissolved in the water, thereby achieving the purpose of purifying the air.
In addition, as the through-flow section of the second inverted container 22 is larger than or equal to that of the passage between the first closed container 21 and the first inverted container 22, the disadvantage of secondary acceleration caused by the fact that the through-flow section of the airflow passage is reduced from large is avoided.
In the pressurized gas purification method of the present embodiment, the cross sections of the second inverted container 22 and the second closed container 21 are circular, the distance between the outer wall of the second inverted container 22 and the inner wall of the second closed container 21 is equal, the upper portion of the second inverted container 22 is convex arc-shaped, and the cross section of the upper portion of the second inverted container 22 is gradually enlarged from top to bottom, so that the gas can flow along the streamline passage between the second closed container 21 and the second inverted container 22, and no vortex or turbulent resistance is generated at the internal corner.
Preferably, in the above-mentioned pressurized gas purging method, the second gas outlet 221 is externally connected with a gas exhaust valve 25 for exhausting the purge gas.
In order to make the flow of the dust-laden pressurized gas more stable, it is preferable that, in the apparatus for purifying the dust-laden pressurized gas, the distance from the outer wall of the second inverted container 22 to the inner wall of the second closed container 21 is equal, the upper portion of the second inverted container 22 is in the shape of an arc which is convex outward, the cross section of the upper portion of the second inverted container 22 is gradually enlarged from top to bottom, and the flow cross section of the second inverted container 22 is equal to or greater than the flow cross section of the passage between the second closed container 21 and the second inverted container 22.
The distance between the vertical central axis of the second inverted container and the side wall of the second inverted container is 0.71-0.8 of the distance between the vertical central axis of the second inverted container 22 and the side wall of the second closed container 21, and the distance between the bottom of the second inverted container 22 and the highest allowable height line of the liquid level in the second closed container 21 is greater than or equal to the distance between the side wall of the second inverted container 22 and the side wall of the second closed container 21. The gas to be treated enters the second closed container 21 through the second gas inlet 211 and moves downwards along the channel between the second closed container 21 and the second inverted container 22, and then flows into the second inverted container 22 from the bottom opening of the second inverted container 22, so that the gas with dust pressure is subjected to spray humidification treatment while expanding the volume and reducing the speed of the gas with dust pressure, solid particles in the gas with dust pressure are dissolved in water or precipitate after increasing the weight when meeting water, and the purpose of purifying air is achieved.
Preferably, a water injection pipe (not shown) is disposed on a side wall of the second closed container 21, the water injection pipe is located above a highest allowable height line of a liquid level of the second closed container 21, an overflow pipe (not shown) is externally connected to a position, corresponding to the highest allowable height line of the liquid level of the second closed container 21, on the side wall of the second closed container 21, and a check valve is disposed on the overflow pipe.
Preferably, be equipped with horn mouth type filter screen in the second airtight container 21, the osculum end of horn mouth type filter screen 27 is installed in the bottom of second airtight container 21 and is enclosed the outside of locating the bottom delivery port of second airtight container 21, the macrostoma end of horn mouth type filter screen 27 is installed in the lateral wall of second airtight container 21 inboardly, force pump 26 sets up in the downside of horn mouth type filter screen 27. Through setting up horn mouth type filter screen 27 as above, divide into two with the space of catch basin, one is located the upside of horn mouth type filter screen 27, and one is located the downside of horn mouth type filter screen 27, force pump 26 sets up in the downside of horn mouth type filter screen 27, can avoid introducing new impurity to taking the processing gas to purifying the spraying water source.
Preferably, evenly set up a plurality of high pressure washing terminals 28 that are used for washing the horn mouth type filter screen along same level on the lateral wall of second closed container 21, high pressure washing terminals 28's direction can be adjusted, and the angle size of contained angle alpha between axis (the direction of injection) and the lateral wall of second closed container 21 of high pressure washing terminals promptly can be adjusted. The high-pressure washing nozzle 28 can wash the bell-mouth-shaped filter screen 27 without dead angles, and the cleanness of the bell-mouth-shaped filter screen 27 is guaranteed to be washed. The high pressure flush head 28 may also function as a water injection tube.
In summary, according to the device for purifying the dust-laden pressurized gas provided by the invention, the gravity type precipitation device 1 is adopted to perform capacity expansion and speed reduction on the dust-laden pressurized gas so as to precipitate solid particles with the particle size of 10-100 μm in the gas, and 50% of the total solid particles can be reduced; the dust pressurized gas is sprayed by the spray purification device 2, so that solid particles with the particle size of 2.5-10 microns in the gas are dissolved in water or precipitate after the weight of the solid particles is increased when the solid particles meet water, and 30% of the total solid particles can be reduced, so that the effect of purifying the dust pressurized gas in a simple, efficient and graded manner is achieved.
EXAMPLE III
Referring to fig. 5 to 9 in combination with fig. 1 to 4, the difference between the pressurized gas purification method of the present embodiment and the second embodiment is: the gas treated by the spray purification device 2 is further subjected to liquid-gas combined purification treatment through a liquid dust removal mixing 3 bin, so that solid particles in the gas are further dissolved in the liquid, the spray purification device 2 is hermetically connected with the liquid dust removal mixing device 3 through a second pipeline 5, that is, the second gas outlet 221 is not externally connected with a gas exhaust valve 25 for exhausting purified gas, but is hermetically connected with the liquid dust removal mixing device 3 through the second pipeline 5, that is, the spray purification device 2 is hermetically connected with the liquid dust removal mixing device 3 through the second pipeline 5.
The liquid dedusting and mixing device 3 includes a third closed container 31 provided with liquid (in this embodiment, the liquid is water) and a liquid-gas combiner 32, a second wastewater discharge valve 33 is provided at the bottom of the third closed container 31, an exhaust valve 34 is provided at the top of the third closed container 31, the liquid-gas combiner 32 is provided in the third closed container 31, the liquid-gas combiner 32 includes an air inlet pipe 325, and a liquid inlet pipe 321, an air inlet pipe 322, a liquid-gas mixing pipe 323 and a diffusion pipe 324 which are coaxially connected in sequence, the free end of the liquid inlet pipe 321 is a liquid inlet, a filter screen 35 is provided at the outer side of the liquid inlet for filtering the liquid entering the liquid-gas combiner 32, a liquid booster pump 37 is provided on the liquid inlet pipe 321, a liquid injection pipe 38 is provided at the upper portion of the sidewall of the third closed container 31, the free end of the diffusion pipe 324 is a liquid-gas discharge port, one end of the air inlet pipe 325 is connected to the sidewall of the, the other end of the air inlet pipe 325 is connected with the second pipeline 5. The liquid dedusting and mixing device 3 with the structure can reduce 10% of total solid particles mainly aiming at the solid particles with the particle size of less than 2.5 microns, and fully mixes the gas with dust under pressure and the liquid in the liquid-gas combiner 32, in the embodiment, the liquid adopts water, and the solid particles with the particle size of less than 2.5 microns in the gas, namely PM 2.5-grade micro particles, are fully fused with water by water and gas, so that the PM 2.5-grade dust and the water-soluble harmful substances in the gas are further reduced by utilizing the characteristic that the dust and the water-soluble harmful substances are dissolved in the water, thereby not only reducing dust pollution, but also purifying the original water-soluble harmful substances in the air.
In order to make the dust-laden pressurized gas and the water fuse more sufficiently and effectively reduce the PM2.5 dust and the water-soluble harmful substances in the gas, it is preferable that, in the above-mentioned purification apparatus for dust-laden pressurized gas, the liquid-gas combiner 32 satisfies the following relationship: q3 ═ V1 ═ 1/4 ═ pi × (1) × d1, d2 ═ 1.5-1.75 × (d 1), d3 ═ d1 (1.118-1.225), where Q3 is the flow rate of gas in intake pipe 325, V1 is the flow rate of liquid in intake pipe 321, V1 can take values of 4m/s to 5m/s, d1 is the pipe diameter of intake pipe 321, d2 is the pipe diameter of liquid-gas mixing pipe 323, and d3 is the pipe diameter of intake pipe 325.
Preferably, in the above purification apparatus for pressurized gas with dust, the pipe diameter of the gas suction pipe 322 gradually increases from the liquid inlet pipe 321 to the liquid-gas mixing pipe 323, the pipe wall of the gas suction pipe 322 is an arc surface protruding outward, one end of the gas inlet pipe 325 is connected to the arc surface of the gas suction pipe 322, the lengths of the liquid inlet pipe 321, the gas suction pipe 322, the liquid-gas mixing pipe 323, and the diffuser pipe 324 are L1 to L4, respectively, and the length L2 of the gas suction pipe 322 is at least 0.75 times the pipe diameter of the liquid inlet pipe 321, so that the optimal matching between the amount of gas sucked by the gas suction pipe 322 and the pipe diameter and flow rate of the liquid inlet pipe 321 is achieved, and the efficiency of the gas suction amount is.
Preferably, in the above purification apparatus for the dust-containing pressurized gas, the liquid-gas mixing pipe 323 is a linear pipe section, the length L3 of the liquid-gas mixing pipe 323 is at least 7 times or more of the pipe diameter d2 of the liquid-gas mixing pipe 323, and the pipe diameter d2 of the liquid-gas mixing pipe 323 is 1 to 2 times of the pipe diameter d1 of the liquid inlet pipe 321, so that the mixing degree of the liquid and the gas and the kinetic energy loss of the fluid can be optimally matched.
Preferably, in the above purification apparatus for a dust-laden pressurized gas, the diffuser 324 is a trumpet-shaped pipe section, the pipe diameter of the diffuser 324 gradually increases from inside to outside, the length L4 of the diffuser is 1 to 1.5 times the pipe diameter d1 of the liquid-gas mixture pipe 323, the pipe wall of the diffuser 324 has an outward inclination angle β, and tan (β) is 1/7 to 1/5, so that the discharge direction and discharge amount of the liquid-gas mixture gas can be optimally matched.
Preferably, in the above purification apparatus for a pressure gas with dust, the third closed container 21 is further provided with a plurality of flow guide plates 36, the lower surfaces of the flow guide plates 36 are arc plates, the arc plates are provided with a plurality of arc grooves 361 at equal intervals, the depth of each arc groove 361 is smaller than the width of each arc groove 361, and the width of each arc groove 361 is smaller than the distance between adjacent arc grooves 361.
In conclusion, the gravity type precipitation device 1 is adopted to perform capacity expansion and speed reduction on the dust pressurized gas so as to precipitate solid particles with the particle size of 10-100 mu m in the gas, and 50% of the total solid particles can be reduced; the dust pressurized gas is sprayed by the spray purification device 2, so that solid particles with the particle size of 2.5-10 mu m in the gas are dissolved in water or precipitate by increasing the weight when meeting water, and the total solid particles can be reduced by 30%; by adopting the liquid dust removal mixing device 3 to carry out liquid-gas combination treatment on the dust pressurized gas, solid particles with the particle size of less than 2.5 microns in the gas are further dissolved in the liquid, and 10 percent of the total solid particles can be reduced, thereby achieving the effect of simply, conveniently, efficiently and hierarchically purifying the dust pressurized gas.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A gravity precipitation device, comprising: a first closed container and a first inverted container, wherein the top of the first closed container is provided with a first air inlet, the bottom of the first closed container is provided with a residual sediment recovery port, the first inverted container is of an inverted U-shaped structure, the first inverted container is coaxially arranged in the first closed container, a first air outlet is formed in the top of the first inverted container, the bottom opening of the first inversion container is arranged, a channel between the first closed container and the first inversion container is used as a primary flash chamber, the inner space of the first inverted container is an inverted two-stage flash chamber, the gas with dust under pressure enters the first closed container through the first gas inlet and passes through a channel between the first closed container and the first inverted container, flows into the first inverted container from the bottom opening of the first inverted container and finally flows out through the first air outlet.
2. A gravity precipitation device according to claim 1 wherein the through-flow cross-section of the first inverted container is equal to or greater than the through-flow cross-section of the passage between the first closed vessel and the first inverted container.
3. A gravity sedimentation device according to claim 1, wherein the outer wall of the first inverted container is equidistant from the inner wall of the first closed container, the first inverted container and the first closed container have circular cross-sections, the upper portion of the first inverted container has an outwardly convex circular arc shape, and the cross-section of the upper portion of the first inverted container is gradually enlarged from top to bottom.
4. A gravity sedimentation device according to claim 1 wherein the distance between the vertical central axis of the first inverted container and the side wall of the first inverted container is from 0.71 to 0.8 of the distance between the vertical central axis of the first inverted container and the side wall of the first closed container.
5. A gravity type sedimentation device according to claim 1, wherein the bottom of the first closed container is a funnel structure, a small end of the funnel structure is used as a sedimentation residue recovery port, and a gravity type spring automatic opening and closing cover is arranged at the sedimentation residue recovery port.
6. A gravity precipitation apparatus as claimed in claim 5, wherein the gravity spring automatic opening and closing cover comprises an anchor ear, a cover plate, a cover hook, a first spring hinge and a second spring hinge, the anchor ear is fixedly disposed at the lower outer side of the hopper structure, the first ear plate and the second ear plate are respectively disposed at opposite sides of the anchor ear, the upper end of the cover hook is hinged to the first ear plate through the first spring hinge, one end of the cover plate is hinged to the second ear plate through the second spring hinge, the other end of the cover plate is snap-connected to the cover hook, the cover plate is automatically opened when the weight of the precipitated dust on the cover plate is greater than or equal to a designed value, and the cover plate is automatically closed when the weight of the precipitated dust on the cover plate is smaller than the designed value.
7. A gravity precipitation device according to claim 6 wherein the cover plate has a male resilient projection on the upper portion of the opposite end thereof, and a female resilient recess on the underside of the cover hook, the male resilient projection mating with the female resilient recess.
8. A gravity operated sedimentation device according to claim 5 wherein the distance from the bottom of the first inverted container to the maximum allowable stockpiling height line within the first closed vessel is greater than or equal to the distance between the side wall of the first inverted container and the side wall of the first closed vessel.
9. A method for purifying a pressurized gas, wherein the dust-laden pressurized gas is subjected to expansion and deceleration by using a gravity type precipitation device according to any one of claims 1 to 8 to precipitate solid particles in the gas, the method comprising:
the dust-containing pressurized gas enters a channel between the first closed container and the first inverted container through a first gas inlet at the top of the first inverted container;
the gas with dust under pressure flows from top to bottom in a channel between the first closed container and the first inverted container;
and the gas with the dust pressure flows downwards to the bottom of the second inverted container, bypasses the bottom of the side wall of the second inverted container, flows into the second closed container, flows from bottom to top in the second closed container, and is subjected to secondary spray humidification treatment by a pipeline arranged on the inner wall of the second closed container through a corresponding spray head.
10. The method according to claim 9, wherein the pressure of the dust-laden pressurized gas is 0.05 to 0.3 MPa.
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Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2935158A (en) * | 1958-02-14 | 1960-05-03 | Fortuna Werke Spezialmaschinen | Dust filter |
| US4445912A (en) * | 1982-02-04 | 1984-05-01 | The Mike Volk Co., Inc. | Effluent air filtration apparatus |
| CN2042746U (en) * | 1988-10-13 | 1989-08-16 | 胡金堂 | Low-resistance dust remover |
| CN2045670U (en) * | 1989-03-22 | 1989-10-11 | 个旧市矿产加工总厂 | Wet dust collector |
| CN2072864U (en) * | 1990-04-09 | 1991-03-13 | 国营江阳化工厂 | Self-cleaning shower dust remover |
| WO1993023145A1 (en) * | 1992-05-19 | 1993-11-25 | Kit, Franklin, T. | Filter system for smoke or polluted air |
| JPH06312370A (en) * | 1993-04-27 | 1994-11-08 | Nitsuchiyuu:Kk | Dust removing device for shot blast |
| SE9801813D0 (en) * | 1998-05-22 | 1998-05-22 | Bertil Larsson | Method and apparatus for purifying gases |
| CN2305242Y (en) * | 1997-08-08 | 1999-01-27 | 安庆林 | Wet composite smoke purifier for boiler |
| US6063171A (en) * | 1998-11-16 | 2000-05-16 | Electrolux Llc | Bactericidal vacuum cleaner filter bag |
| US6391100B1 (en) * | 2001-07-06 | 2002-05-21 | J. S. Hogan | Method and apparatus for cleaning a gas |
| US6645369B1 (en) * | 1999-09-24 | 2003-11-11 | Institut Francais Du Petrole | Gas/liquid separation in a hydrocarbon conversion process |
| AU2005282215A1 (en) * | 2004-09-10 | 2006-03-16 | Malcolm Coleman | Odour reduction apparatus |
| CN101081350A (en) * | 2007-05-18 | 2007-12-05 | 谭文华 | Water-absorbing type assembled highly-effective dust-removing desulfurizing device |
| CN201524431U (en) * | 2009-09-25 | 2010-07-14 | 如皋市江北添加剂有限公司 | Centrifugal spray drying system |
| CN201578941U (en) * | 2010-01-07 | 2010-09-15 | 华北电力科学研究院有限责任公司 | Flue gas dust removing device and flue gas oxygen content measuring system |
| CN102743942A (en) * | 2012-06-15 | 2012-10-24 | 无锡翱翔环保机械有限公司 | Wet-type desulfurizing deduster downstream spraying structure |
| CN103867731A (en) * | 2014-04-08 | 2014-06-18 | 哈密市金磁封环保科技有限公司 | Rotating clamping sealer of magnetic rotor shaft |
| CN204051244U (en) * | 2014-08-06 | 2014-12-31 | 深圳碳中和生物燃气股份有限公司 | A kind of dedusting and purifying device of biogas |
| CN104941323A (en) * | 2015-06-10 | 2015-09-30 | 青岛京润石化工程有限公司 | Multi-stage agglomeration and rotational flow combined method for removing liquid from gas |
| CN106422734A (en) * | 2016-12-02 | 2017-02-22 | 江苏瑞洁环境工程科技有限责任公司 | Bubbling flue gas desulfurizing device |
| CN109701324A (en) * | 2019-01-25 | 2019-05-03 | 南京航空航天大学 | Axis stream combined variable caliber multi-cyclone dust-extraction unit and method |
| CN208878078U (en) * | 2018-08-29 | 2019-05-21 | 亚洲硅业（青海）有限公司 | A kind of sedimentation structure and heat-exchanger rig |
| CN209155504U (en) * | 2018-09-18 | 2019-07-26 | 南京兰丰环保科技有限公司 | A kind of high-efficiency flue gas desulfurization deduster |
| CN209997390U (en) * | 2019-04-16 | 2020-01-31 | 厦门龙净环保物料输送科技有限公司 | dust removing device |
-
2020
- 2020-06-16 CN CN202010545302.2A patent/CN111714967B/en active Active
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2935158A (en) * | 1958-02-14 | 1960-05-03 | Fortuna Werke Spezialmaschinen | Dust filter |
| US4445912A (en) * | 1982-02-04 | 1984-05-01 | The Mike Volk Co., Inc. | Effluent air filtration apparatus |
| CN2042746U (en) * | 1988-10-13 | 1989-08-16 | 胡金堂 | Low-resistance dust remover |
| CN2045670U (en) * | 1989-03-22 | 1989-10-11 | 个旧市矿产加工总厂 | Wet dust collector |
| CN2072864U (en) * | 1990-04-09 | 1991-03-13 | 国营江阳化工厂 | Self-cleaning shower dust remover |
| WO1993023145A1 (en) * | 1992-05-19 | 1993-11-25 | Kit, Franklin, T. | Filter system for smoke or polluted air |
| JPH06312370A (en) * | 1993-04-27 | 1994-11-08 | Nitsuchiyuu:Kk | Dust removing device for shot blast |
| CN2305242Y (en) * | 1997-08-08 | 1999-01-27 | 安庆林 | Wet composite smoke purifier for boiler |
| SE9801813D0 (en) * | 1998-05-22 | 1998-05-22 | Bertil Larsson | Method and apparatus for purifying gases |
| US6063171A (en) * | 1998-11-16 | 2000-05-16 | Electrolux Llc | Bactericidal vacuum cleaner filter bag |
| US6645369B1 (en) * | 1999-09-24 | 2003-11-11 | Institut Francais Du Petrole | Gas/liquid separation in a hydrocarbon conversion process |
| US6391100B1 (en) * | 2001-07-06 | 2002-05-21 | J. S. Hogan | Method and apparatus for cleaning a gas |
| AU2005282215A1 (en) * | 2004-09-10 | 2006-03-16 | Malcolm Coleman | Odour reduction apparatus |
| CN101081350A (en) * | 2007-05-18 | 2007-12-05 | 谭文华 | Water-absorbing type assembled highly-effective dust-removing desulfurizing device |
| CN201524431U (en) * | 2009-09-25 | 2010-07-14 | 如皋市江北添加剂有限公司 | Centrifugal spray drying system |
| CN201578941U (en) * | 2010-01-07 | 2010-09-15 | 华北电力科学研究院有限责任公司 | Flue gas dust removing device and flue gas oxygen content measuring system |
| CN102743942A (en) * | 2012-06-15 | 2012-10-24 | 无锡翱翔环保机械有限公司 | Wet-type desulfurizing deduster downstream spraying structure |
| CN103867731A (en) * | 2014-04-08 | 2014-06-18 | 哈密市金磁封环保科技有限公司 | Rotating clamping sealer of magnetic rotor shaft |
| CN204051244U (en) * | 2014-08-06 | 2014-12-31 | 深圳碳中和生物燃气股份有限公司 | A kind of dedusting and purifying device of biogas |
| CN104941323A (en) * | 2015-06-10 | 2015-09-30 | 青岛京润石化工程有限公司 | Multi-stage agglomeration and rotational flow combined method for removing liquid from gas |
| CN106422734A (en) * | 2016-12-02 | 2017-02-22 | 江苏瑞洁环境工程科技有限责任公司 | Bubbling flue gas desulfurizing device |
| CN208878078U (en) * | 2018-08-29 | 2019-05-21 | 亚洲硅业（青海）有限公司 | A kind of sedimentation structure and heat-exchanger rig |
| CN209155504U (en) * | 2018-09-18 | 2019-07-26 | 南京兰丰环保科技有限公司 | A kind of high-efficiency flue gas desulfurization deduster |
| CN109701324A (en) * | 2019-01-25 | 2019-05-03 | 南京航空航天大学 | Axis stream combined variable caliber multi-cyclone dust-extraction unit and method |
| CN209997390U (en) * | 2019-04-16 | 2020-01-31 | 厦门龙净环保物料输送科技有限公司 | dust removing device |
Non-Patent Citations (1)
| Title |
|---|
| 饶勃: "《建筑门窗装修技术》", 31 January 2001, 上海科学技术文献出版社 * |
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